rs150625194

Variant names:

• chr16-70252508-G-A
• rs150625194
• NM_001605.3:c.*213C>T

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_001605.3(AARS1):​c.*213C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000733 in 597,864 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0020 (2 hom., cov: 33)
  • Exomes 𝑓: 0.00031 (1 hom.)
• Consequence: AARS1 NM_001605.3 3_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.589
• Publications: 1 publications found

Genes affected

AARS1 (HGNC:20): (alanyl-tRNA synthetase 1) The human alanyl-tRNA synthetase (AARS) belongs to a family of tRNA synthases, of the class II enzymes. Class II tRNA synthases evolved early in evolution and are highly conserved. This is reflected by the fact that 498 of the 968-residue polypeptide human AARS shares 41% identity witht the E.coli protein. tRNA synthases are the enzymes that interpret the RNA code and attach specific aminoacids to the tRNAs that contain the cognate trinucleotide anticodons. They consist of a catalytic domain which interacts with the amino acid acceptor-T psi C helix of the tRNA, and a second domain which interacts with the rest of the tRNA structure. [provided by RefSeq, Jul 2008]

AARS1 Gene-Disease associations (from GenCC):

• Charcot-Marie-Tooth disease axonal type 2N

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Orphanet
• undetermined early-onset epileptic encephalopathy

  Inheritance: AR, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Illumina, Orphanet
• developmental and epileptic encephalopathy, 29

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• trichothiodystrophy 8, nonphotosensitive

  Inheritance: AR, Unknown Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 16-70252508-G-A is Benign according to our data. Variant chr16-70252508-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 320321.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00197 (300/152324) while in subpopulation AFR AF = 0.00601 (250/41576). AF 95% confidence interval is 0.0054. There are 2 homozygotes in GnomAd4. There are 148 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 2 AD,AR,Unknown gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AARS1	NM_001605.3	c.*213C>T		3_prime_UTR_variant	Exon 21 of 21	ENST00000261772.13	NP_001596.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AARS1	ENST00000261772.13	c.*213C>T		3_prime_UTR_variant	Exon 21 of 21	1	NM_001605.3	ENSP00000261772.8

Frequencies

GnomAD3 genomes AF: 0.00197 AC: 300 AN: 152206 Hom.: 2 Cov.: 33

Gnomad AFR AF: 0.00603

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00262

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00335

GnomAD4 exome AF: 0.000310 AC: 138 AN: 445540 Hom.: 1 Cov.: 4 AF XY: 0.000268 AC XY: 63 AN XY: 235450

African (AFR) AF: 0.00554 AC: 69 AN: 12450

American (AMR) AF: 0.00141 AC: 27 AN: 19104

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 13680

East Asian (EAS) AF: 0.00 AC: 0 AN: 30108

South Asian (SAS) AF: 0.00 AC: 0 AN: 46088

European-Finnish (FIN) AF: 0.0000347 AC: 1 AN: 28782

Middle Eastern (MID) AF: 0.00206 AC: 4 AN: 1942

European-Non Finnish (NFE) AF: 0.0000784 AC: 21 AN: 267704

Other (OTH) AF: 0.000623 AC: 16 AN: 25682

GnomAD4 genome AF: 0.00197 AC: 300 AN: 152324 Hom.: 2 Cov.: 33 AF XY: 0.00199 AC XY: 148 AN XY: 74482

African (AFR) AF: 0.00601 AC: 250 AN: 41576

American (AMR) AF: 0.00261 AC: 40 AN: 15298

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 68032

Other (OTH) AF: 0.00331 AC: 7 AN: 2114

Alfa AF: 0.00170 Hom.: 0

Bravo AF: 0.00264

Asia WGS AF: 0.000577 AC: 2 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Charcot-Marie-Tooth disease axonal type 2N Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	4.4
DANN	Benign	0.79
PhyloP100		-0.59
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs150625194; hg19: chr16-70286411; COSMIC: COSV99933688; COSMIC: COSV99933688;